The pressure loss of a micro centrifugal pump refers to the pressure drop caused by the friction and resistance of the fluid in the pipeline when the pump is conveying the fluid. In order to calculate the pressure loss of a micro centrifugal pump, the following methods can be used:

1. Through experimental measurement method: You can install a pressure gauge and a flow meter in the system to measure the pressure and flow data at different flow rates, and then use the formula to calculate the pressure loss. This method is more accurate, but also more cumbersome and requires experimental measurement.

2. Through the empirical formula method: You can use the empirical formula to estimate the pressure loss. This method is relatively simple, but the accuracy is limited. Commonly used empirical formulas include: Darcy-Weisbach formula, Hazen-Williams formula, Colebrook-White formula, etc.

Among them, the Darcy-Weisbach formula is the most widely used empirical formula, and its calculation formula is:

ΔP = f * (L/D) * (V^2/2g)

Among them, ΔP is the pressure loss, f is the friction coefficient, L is the pipe length, D is the inner diameter of the pipe, V is the flow rate, and g is the acceleration of gravity.

3. Computer simulation method: Computer simulation software can be used to simulate the system and calculate the pressure loss. This method is more accurate than the experimental measurement method and the empirical formula method, but it requires certain computer technology and software operation capabilities.

In summary, the pressure loss of the micro centrifugal pump can be calculated by experimental measurement, empirical formula or computer simulation. The specific method to be selected needs to be comprehensively considered according to the actual situation and needs.